Vent-pipe attachment.



I. H. BROWN. VENT PIPE ATTACHMENT APPLIOATION nun mm: 26, 1907.

899,291. Patented Sept 22,1908.

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JOHN H. BROWN, OF KEENE, NEW HAMPSHIRE.

VENT-PIPE ATTACHMENT.

Specification of Letters Patent.

Patented Sept. 22, 1908.

Application filed June 26, 1907. Serial No. 380,903.

To all whom it may concern:

Be it known that I, JOHN H. BROWN, a citizen of the'United States, and aresident of Keene, in the county of Cheshire and State of New Hampshire,have invented a new and Improved V ent-Pipe Attachment, of which thefollowing is a full, clear, and exact description.

The object of the invention is to provide a new and improved temporaryattachment for the upper end of the vent pipe of a building, to guardagainst leakage between the roof collar and the soil pipe when testingthe vent pipe with water, and to allow of conveniently placing theattachment in position prior to the test and to allow quick removal ofthe attachment after the test is made.

The invention consists of novel features and parts and combinations ofthe same, which will be more fully described hereinafter and thenpointed out in the claims.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this specification, in whichsimilar characters of reference indicate corresponding parts in all theviews.

Figure 1 is a side elevation of the improvement as applied; Fig. 2 is asectional side elevation of the same; Fig. 3 is a plan view of the same;Fig. 4 is an inverted plan view of the same on the line 44 of Fig. 2,and Fig. 5 is a reduced side elevation of the improvement as applied.

The vent pipe A projects with its upper end above the roof A of thebuilding and is encircled by a roof collar A preferably offrusto-conical shape, and having its base provided with a flange Anailed to the roof boards and covered by the shingles or other roofcovering. The apex end A of the roof collar A is bent inward anddownward into the upper end of the vent pipe A and crimped to the innersurface thereof to form a firm connection with the vent pipe A.

On the upper ends of the vent pipe A and roof collar A is removably helda guard or shield B, of inverted dish shape and made of rubber or otherelastic material, the guard having a hub B fitting inside of the ventpipe A, and the crimped portion A, so that the annular guard or shield Bprojects from the vent pipe A in a downward and outward direction, tocause the overflow of water forced up through the vent pipe A to flowthrough the hub B and over the guard, with a view to deflect theoverflow of water from the side of the vent pipe A and roof collar Athereby preventing leakage of the water through the roof of thebuilding.

In order to securely fasten the guard B in place on the upper end of thevent pipe A, the following device is provided: The bottom and top of thehub B of the guard or shield B are engaged by skeleton washers C and D,of which the washer C is secured to the lower end of a screw rod E,which extends upwardly and loosely through the top washer D, and on thescrew rod E screws a wing nut F and against the top of the washer D, soas to force the same downward with a view to cause the two washers C andD to compress the hub B. N 0W in compressing the hub B, the same isspread. outward and forced in firm contact with the inside of the ventpipe A and the crimped portion A", to securely clamp the guard B inposition on the upper or outer end of the vent pipe A and roof collar ABy the rubber hub B engaging both the vent pipe and the crimped portionA, the guard is securely held in place during the test.

It is understood that the vent pipe A has to be test-ed to determinewhether the vent pipe is obstructed or unobstructed, and for thispurpose water is forced up through the vent pipe A, and this water canreadily pass by way of the skeleton washers C and D and the hub B to thetop of the guard or shield B, to flow down the same and be deflectedfrom the vent pipe A, thus preventing leakage of the overflow waterthrough the roof of the building at the joint of the vent pipe A withthe roof of the building. After the test has been made, it is onlynecessary for the plumber or other person to unscrew the wing nut F torelieve the compression on the hub B, so that the device can be readilyremoved from the upper end of the vent pipe A.

From the foregoing it will be seen that the vent pipe attachment is onlytemporary, and it can be readily placed in position on the vent pipeprior to the test, and removed from the vent pipe after the test ismade.

Having thus described my invention, I claim as new and desire to secureby Letters Patent:

1. The combination of a vent pipe extendin through the roof of abuilding, a roof co lar surrounding the projecting end of the vent pipeand having a base for attachment to the roof, the upper end of the roofcollar being crimped into the upper end of the vent pipe, and atemporary overflow guard having a compressible hub fitting in the ventpipe, and means for compressing said hub.

2. A temporary attachment for vent pipes, comprising an overflow guardat the upper end of the vent pipe, and means for removably attaching theguard to the said vent 1 e. P A temporary attachment for vent pipes,comprising a guard having a central opening and arranged on the upperend of the said vent pipe for deflecting the overflow of the waterforced up the said vent pipe during the testing thereof.

4. An attachment for vent pipes on buildings, comprising an annularoverflow guard having a central opening and removably held on the upperend of the vent pipe and curved outwardly and downwardly to carry offthe overflow Water forced up thevent pipe during the testing of thelatter.

5. A temporary attachment for vent pipes of buildings, comprising anannular guard having a compressible hub fitting into the inside of theupper end of the vent pipe,

and means for compressing the said hub to clampingly engage the hub withthe inside of the vent pipe.

6 A tem orary attachment for vent pipes of bui dings, comprising anannular guard having a compressible hub fitting into the inside of theupper end of the vent pipe, washers engaging the top and bottom of thesaid hub, a screw rod extending loosely through the upper washer, thelower washer being secured on the screw rod, and a nut screwing on thesaid screw rod and against the said upper washer.

7. A temporary attachment for vent pipes, comprising an inverteddish-shaped guard having a hub adapted to fit in a vent pipe, the Wholebeing formed of elastic material, and means for securing the guard to avent pipe.

- In testimonywhereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOHN H. BROWN. Witnesses:

H.-C. BUTLER, VICTOR E. KING.

